48 GTH-4016SR • GTH-4018SR Part No. 57.4400.9203
March 2010
Section 4 • Repair Procedures
REV A
BOOM COMPONENTS
1-10 How to Remove the Third
Boom Section Extension Cylinder
(only for GTH-4016 SR)
WARNING
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting
this procedure without these skills
and tools could result in death
or serious injury and significant
component damage. Dealer
service is strongly recommended.
1. Set the boom to horizontal position and extend
it until the pin of the rod side is on the 3rd
boom section.
2. Remove the screw fixing the pin to the 3rd
boom section.
3. Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
If necessary, lift the cylinder using a jack under
the boom, corrisponding to the hole inside the
3rd boom section.
4. Retract the boom entirely, remove the screw
that locks the pin (bottom side). Extract out
and knock the pin using a plug of soft material
(aluminium, copper, wood, etc.).
5. Place a container of suitable size under the
hydraulic piping before disconnecting.
PROTECT THE
ENVIRONMENT
Used oils must be handled and
disposed of according to local
regulations. Address to legally
authorised centres
6. Disconnect the two hydraulic hoses from the
blocking valve, then plug the disconnected
connectors to prevent dust and impurities from
entering the circuit.
1-9 How to Remove the Second
Boom Section Extension Cylinder
WARNING
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting
this procedure without these skills
and tools could result in death
or serious injury and significant
component damage. Dealer
service is strongly recommended.
1. Set the boom to horizontal position with the
telescope slightly extended to work on the
cylinder connecting pin (rod side).
2. Remove the screw fixing the pin to the boom
section.
3. Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
4. Remove the two screws of the cylider holder.
5. Place a container of suitable size under the
hydraulic piping before disconnecting
PROTECT THE
ENVIRONMENT
Used oils must be handled and
disposed of according to local
regulations. Address to legally
authorised centres
6. Disconnect the hydraulic hoses of the cylinder,
then plug the disconnected connectors to
prevent dust and impurities from entering the
circuit.
7. Loosen and remove the screw fixing the
cylinder pin (bottom side).
8. Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
9. Pull out the cylinder from the boom section and
sling it with the textile bridles connected to the
bridge crane.
